The Auto-CAD command used to combine two or more primitive shapes into a single complex 3-dimensional model is ________.

CAD programs which incorporate parametric modeling utilize a system in which the dimensions control the ________.

This is the term for the range of tightness or looseness resulting from the allowances and tolerances in mating parts:

The principle reason for using an auxiliary view is ________.

When lines intersect on a drawing at angles of this many degrees, it is customary not to dimension the angle:

This type of surface is tipped to all principal planes of projection and does not appear true size in any standard view:

There should be a visible gap between the wall and the _________ line.

In this type of dimensioning, allowance must be made for bends: